<!DOCTYPE html>
<html>
<head>
    <style type="text/css">
        body {
            font-family: 'Helvetica';
        }
    </style>
    <title>Tick Tack Toe Login</title>
</head>
<body>
  <form action="/" method="get">
      User Id: <input type="text" name="u"><br>
      <input type="hidden" name="g" value="{{ game_key }}">
      <input type="submit" value="Go">
  </form>
</body>
</html>